Micro-speaker

Abstract

This utility model discloses a miniature loudspeaker, including a frame assembly, a magnetic circuit assembly, a spider, and two vibrating assemblies. Each vibrating assembly includes a connected diaphragm assembly and a voice coil; one diaphragm assembly is connected to the top of the frame assembly, and the other diaphragm assembly is connected to the bottom of the frame assembly. A limiting block is provided on the voice coil. The magnetic circuit assembly is connected to the frame assembly, and magnetic gaps for voice coil movement are provided at its top and bottom. The spider is fitted onto the limiting block and connects the two voice coils. This miniature loudspeaker has a novel structure. Using a spider to connect the two voice coils not only improves the voice coil's wobbling vibration phenomenon and increases production yield, but also improves the synchronous vibration of the two voice coils, enhancing their working synchronization and allowing for a larger amplitude, thereby improving the overall sound quality. Compared to existing technologies, this reduces the number of spiders used, simplifying the assembly process of the miniature loudspeaker, improving production efficiency, and further saving manufacturing costs.

Description

Technical Field

[0001] This utility model relates to the field of electroacoustic converter technology, and in particular to miniature loudspeakers. Background Technology

[0002] Nowadays, mobile devices such as smartphones and tablets enrich people's lives, and electroacoustic converters play an indispensable role as audio devices.

[0003] One of the development trends of miniature loudspeakers is large amplitude. However, large amplitude leads to drawbacks such as low production yield and susceptibility to swaying and collision, resulting in noise or distortion. Chinese utility model patent application number 202222658323.2 discloses a loudspeaker with two voice coils arranged back-to-back, each connected to a diaphragm assembly. To improve the swaying phenomenon of the voice coils under large amplitude conditions, the loudspeaker incorporates a spider connecting the voice coils to the frame. While this design improves the swaying phenomenon to some extent, the spiders connected to the two voice coils operate independently, and the synchronicity of the two voice coils is not improved. Therefore, there is still room for further enhancement of its acoustic performance. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a high-performance miniature loudspeaker.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a miniature loudspeaker, comprising:

[0006] Sink rack assembly,

[0007] Two vibrating components, each including a connected diaphragm assembly and a voice coil, one diaphragm assembly being connected to the top of the frame assembly and the other diaphragm assembly being connected to the bottom of the frame assembly; the voice coil is provided with a limiting block;

[0008] A magnetic circuit assembly, which is connected to the frame assembly, has magnetic gaps at its top and bottom for the voice coil to move.

[0009] A spring is fitted onto the limiting block and connects the two voice coils.

[0010] Furthermore, the number of the multiple projectiles is greater than or equal to the number of projectiles, and the multiple projectiles are divided into at least one group arranged symmetrically.

[0011] Furthermore, the spider is located between the two voice coils.

[0012] Furthermore, the spring does not protrude from the inner wall surface of the voice coil; and / or, the spring does not protrude from the outer wall surface of the voice coil.

[0013] Furthermore, the slingshot is made of a non-conductive material.

[0014] Furthermore, the material of the elastic wave is rayon or plastic.

[0015] Furthermore, the spiking wave is made of a conductive material.

[0016] Furthermore, the material of the elastic wave is fiber cloth or metal.

[0017] Furthermore, the two voice coils are connected in series or in parallel via the spider.

[0018] Furthermore, the limiting block is connected to the voice coil by applying adhesive or adhesive backing.

[0019] The beneficial effects of this invention are as follows: This miniature loudspeaker has a novel structure. Utilizing a spider to connect the two voice coils not only improves the voice coil's wobbling vibration, increasing production yield and saving costs, but also improves the synchronous vibration of the two voice coils, enhancing their working synchronization. This allows for a larger amplitude in the miniature loudspeaker, thereby improving the overall sound effect and performance. Compared to existing technologies, it reduces the number of spiders required. The limiting block restricts the position of the spider, facilitating its assembly or connection, reducing the assembly difficulty of the miniature loudspeaker, improving production efficiency, and further saving manufacturing costs. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the miniature loudspeaker according to Embodiment 1 of this utility model;

[0021] Figure 2 This is a partial structural schematic diagram of the miniature speaker according to Embodiment 1 of this utility model;

[0022] Figure 3 This is an exploded view of the vibration component and the spiking wave in the miniature loudspeaker of Embodiment 1 of this utility model.

[0023] Label Explanation:

[0024] 1. Sink stand assembly;

[0025] 2. Magnetic circuit assembly; 21. Magnetic gap; 22. Yoke; 23. Central magnetic structure; 24. Magnetic guide plate;

[0026] 3. Spiral wave;

[0027] 4. Vibration assembly; 41. Diaphragm assembly; 42. Voice coil; 43. Limiting block. Detailed Implementation

[0028] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0029] Please refer to Figures 1 to 3 Miniature loudspeakers, including:

[0030] Sink stand assembly 1,

[0031] Two vibrating components 4, each vibrating component 4 including a connected diaphragm assembly 41 and a voice coil 42, one diaphragm assembly 41 being connected to the top of the frame assembly 1, and the other diaphragm assembly 41 being connected to the bottom of the frame assembly 1; a limiting block 43 is provided on the voice coil 42;

[0032] Magnetic circuit assembly 2, which is connected to the frame assembly 1, and magnetic gaps 21 for the voice coil 42 to move are respectively provided at the top and bottom of the magnetic circuit assembly 2;

[0033] A spring wave 3 is sleeved on the limiting block 43 and is connected to two voice coils 42.

[0034] As can be seen from the above description, the beneficial effects of this utility model are as follows: This miniature loudspeaker has a novel structure. Using a spider 3 to connect the two voice coils 42 not only improves the swaying vibration phenomenon of the voice coils 42, increasing production yield and saving costs, but also improves the synchronous vibration of the two voice coils 42, enhancing their working synchronization. This allows the amplitude of the miniature loudspeaker to be made larger, thereby improving the overall sound effect and performance. Compared with existing technologies, the number of spiders 3 used can be reduced. The limiting block 43 can restrict the position of the spider 3, facilitating its assembly or connection, reducing the assembly difficulty of the miniature loudspeaker, improving production efficiency, and further saving manufacturing costs.

[0035] Furthermore, the number of the multiple spring waves 3 is greater than or equal to the number of the multiple spring waves 3, which are arranged in at least one group symmetrically.

[0036] As can be seen from the above description, the multiple sets of symmetrically arranged spiders 3 can effectively balance the forces on the two voice coils 42 and better improve the swaying phenomenon of the voice coils 42.

[0037] Furthermore, the spring wave 3 is located between the two voice coils 42.

[0038] As can be seen from the above description, the spider 3 is located between the two voice coils 42, which can make full use of the gap between the two voice coils 42, thereby making the structure of the miniature loudspeaker more compact.

[0039] Furthermore, the spring wave 3 is not protruding relative to the inner wall surface of the voice coil 42; and / or, the spring wave 3 is not protruding relative to the outer wall surface of the voice coil 42.

[0040] As can be seen from the above description, the setting of the spider 3 will not affect the setting of other components inside the miniature speaker, and can avoid the spider 3 from rubbing against other components inside the miniature speaker.

[0041] Furthermore, the elastic wave 3 is made of a non-conductive material.

[0042] Furthermore, the material of the elastic wave 3 is rayon or plastic.

[0043] As can be seen from the above description, there are many types of elastic, non-conductive materials, and the specific type can be selected according to actual needs.

[0044] Furthermore, the elastic wave 3 is made of a conductive material.

[0045] Furthermore, the material of the elastic wave 3 is fiber cloth or metal.

[0046] As can be seen from the above description, there are many types of elastic conductive materials, and the specific type can be selected according to actual needs.

[0047] Furthermore, the two voice coils 42 are connected in series or in parallel via the spider 3.

[0048] As can be seen from the above description, using a spinner 3 made of conductive material to connect the two voice coils 42 in series or in parallel can reduce the number of pads used on the frame assembly 1, thereby saving costs.

[0049] Furthermore, the limiting block 43 and the voice coil 42 are connected by adhesive or backing adhesive.

[0050] As can be seen from the above description, the connection method of the limit block 43 is simple and easy to assemble.

[0051] Please refer to Figures 1 to 3 One embodiment of this utility model is a miniature speaker, which can be applied to electronic devices such as mobile phones, tablets, and smartwatches.

[0052] The miniature loudspeaker includes a frame assembly 1, a magnetic circuit assembly 2, a spider 3, and two vibrating components 4. Each vibrating component 4 includes a connected diaphragm assembly 41 and a voice coil 42. One diaphragm assembly 41 is connected to the top of the frame assembly 1, and the other diaphragm assembly 41 is connected to the bottom of the frame assembly 1. The magnetic circuit assembly 2 is connected to the frame assembly 1. The top and bottom of the magnetic circuit assembly 2 are respectively provided with magnetic gaps 21 for the movement of the voice coil 42. The two voice coils 42 correspond one-to-one with the two magnetic gaps 21. The spider 3 is fitted onto the limiting block 43 and connects to the two voice coils 42. Preferably, the spider 3 is spiral-shaped, but other shapes that provide elasticity are also possible. The limiting block 43 is a block with an elongated horizontal cross-section. Each spider 3 is provided with two limiting blocks 43, and both ends of the spider 3 are fitted onto the two limiting blocks 43. The limiting block 43 and the voice coil 42 are bonded together with anaerobic adhesive or silicone.

[0053] Optionally, the magnetic circuit assembly 2 includes a yoke 22 and a central magnetic structure 23. The top and bottom surfaces of the yoke 22 are respectively connected to the central magnetic structure 23. The central magnetic structure 23 includes a central magnet and a central washer, with the central magnet connecting the central washer and the yoke 22. To make the miniature speaker smaller, in this embodiment, magnetic guide plates 24 are respectively provided on opposite sides of the yoke 22. The magnetic guide plates 24 are perpendicular to the yoke 22, and a magnetic gap 21 is formed between the magnetic guide plates 24 and the central magnetic structure 23. The middle part of the magnetic guide plates 24 is connected to the yoke 22. That is, the yoke 22 and the two magnetic guide plates 24 are connected to form an I-shaped structure. Preferably, the magnetic guide plates 24 and the yoke 22 are integrally formed. In this case, the magnetic guide plates 24 are connected and fixed to the frame assembly 1.

[0054] In other embodiments, the magnetic circuit assembly 2 may further include a side magnetic structure connecting the yoke 22. In this case, the opposite sides of the yoke 22 do not need to be connected to the magnetic guide plate 24. The magnetic gap 21 is formed between the side magnetic structure and the central magnetic structure 23. The side magnetic structure includes a side magnet and a side washer. The side magnet connects the side washer and the yoke 22. The setting of the side magnetic structure can effectively improve the effective magnetic field strength of the magnetic circuit assembly 2, thereby further improving the acoustic performance of the miniature loudspeaker.

[0055] The number of springs 3 is multiple, and these multiple springs 3 are arranged in at least one group symmetrically. In this embodiment, the magnetic plate 24 is arranged corresponding to the long side of the voice coil 42, and there are a total of two springs 3. The springs 3 are connected to the short side of the voice coil 42. A limiting block 43 is provided on each of the four short sides of the two voice coils 42. In other embodiments, by reasonably designing the structure of the magnetic circuit assembly 2, the connection between the spring 3 and the voice coil 42 can be at the corner or long side of the voice coil 42, etc.

[0056] In a preferred embodiment, the spring 3 is located between the two voice coils 42, with one end of the spring 3 connected to the bottom surface of one voice coil 42 and the other end connected to the top surface of the other voice coil 42. The limiting block 43 is connected to the bottom or top surface of the voice coil 42. More preferably, the spring 3 does not protrude from the inner wall surface of the voice coil 42; and / or, the spring 3 does not protrude from the outer wall surface of the voice coil 42. The fact that the spring 3 does not protrude from the inner wall of the voice coil 42 means that the horizontal distance between the spring 3 and the central magnetic structure 23 is greater than or equal to the horizontal distance between the voice coil 42 (the area corresponding to the spring 3) and the central magnetic structure 23; the fact that the spring 3 does not protrude from the outer wall of the voice coil 42 means that the horizontal distance between the outer edge of the spring 3 and the central magnetic structure 23 is less than or equal to the horizontal distance between the outer wall of the voice coil 42 (the area corresponding to the spring 3) and the central magnetic structure 23.

[0057] The elastic wave 3 can be made of either a non-conductive or a conductive material, depending on the specific needs. When the elastic wave 3 is made of a non-conductive material, the material can be rayon, plastic, or other materials; when the elastic wave 3 is made of a conductive material, the material can be fiber cloth, metal, or other composite materials.

[0058] In addition, when the spring 3 is made of conductive material, it is preferable that the two voice coils 42 are connected in series or in parallel through the spring 3, which can reduce the number of pads mounted on the frame assembly 1 and help save on pad usage costs.

[0059] In summary, the miniature speaker structure provided by this utility model is novel. Utilizing a spider to connect the two voice coils not only improves the voice coil wobbling vibration phenomenon, increasing production yield and saving costs, but also improves the synchronous vibration of the two voice coils, enhancing their working synchronization and allowing for a larger amplitude in the miniature speaker, thereby improving the overall sound effect and performance. Compared to existing technologies, the number of spiders required can be reduced. The limiting block restricts the position of the spider, facilitating its assembly or connection, reducing the assembly difficulty of the miniature speaker, improving production efficiency, and further saving manufacturing costs. The use of a spider made of conductive material to connect the two voice coils in parallel or series reduces the number of solder pads on the frame assembly, further lowering the production cost of the miniature speaker.

[0060] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A miniature loudspeaker, characterized in that, include: Sink rack assembly, Two vibrating components, each including a connected diaphragm assembly and a voice coil, one diaphragm assembly being connected to the top of the frame assembly and the other diaphragm assembly being connected to the bottom of the frame assembly; the voice coil is provided with a limiting block; A magnetic circuit assembly, which is connected to the frame assembly, has magnetic gaps at its top and bottom for the voice coil to move. A spring is fitted onto the limiting block and connects the two voice coils.

2. The miniature loudspeaker according to claim 1, characterized in that: The number of the multiple projectiles is greater than or equal to the number of projectiles, and the multiple projectiles are divided into at least one group arranged symmetrically.

3. The miniature loudspeaker according to claim 1, characterized in that: The spider is located between the two voice coils.

4. The miniature loudspeaker according to claim 3, characterized in that: The spring is not protruding relative to the inner wall surface of the voice coil; and / or, the spring is not protruding relative to the outer wall surface of the voice coil.

5. The miniature loudspeaker according to claim 1, characterized in that: The elastic wave is made of a non-conductive material.

6. The miniature loudspeaker according to claim 5, characterized in that: The material of the elastic wave is rayon or plastic.

7. The miniature loudspeaker according to claim 1, characterized in that: The elastic wave is made of a conductive material.

8. The miniature loudspeaker according to claim 7, characterized in that: The material of the elastic wave is fiber cloth or metal.

9. The miniature loudspeaker according to claim 7, characterized in that: The two voice coils are connected in series or in parallel via the spider.

10. The miniature loudspeaker according to claim 1, characterized in that: The limiting block is connected to the voice coil by applying glue or adhesive backing.

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